:root {
  --green: #2e7d32;
  --green-dark: #1b5e20;
  --amber: #b26a00;
  --ink: #1f2a1f;
  --muted: #5c6b5c;
  --line: #d7e0d7;
  --paper: #f5f8f4;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Sarabun", "Noto Sans Thai", "Leelawadee UI", Tahoma, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

main {
  max-width: 560px;
  margin: 0 auto;
  padding: 16px;
}

header h1 {
  margin: 8px 0 0;
  color: var(--green-dark);
  font-size: 1.7rem;
}

header p { margin: 0 0 12px; color: var(--muted); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.tips { margin: 0 0 12px; }

#image-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.file-button,
#analyze-button {
  display: block;
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  font: inherit;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
}

.file-button {
  border: 2px dashed var(--green);
  color: var(--green-dark);
  background: #fff;
}

#image-input:focus-visible + #preview,
.file-button:focus-within { outline: 3px solid var(--green); }

#preview {
  display: block;
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  margin-top: 12px;
  border-radius: 10px;
  background: var(--paper);
}

#analyze-button {
  margin-top: 12px;
  border: 0;
  background: var(--green);
  color: #fff;
}

#analyze-button:disabled { background: #a5b8a5; cursor: not-allowed; }

#status { margin: 10px 0 0; color: var(--muted); font-size: 0.95rem; }

#headline h3 { margin: 0 0 4px; font-size: 1.3rem; color: var(--green-dark); }
#headline.alert h3 { color: var(--amber); }
#headline p { margin: 0 0 8px; }

.bar-row { margin: 10px 0; }
.bar-label { display: flex; justify-content: space-between; font-size: 0.95rem; }
.bar-track { height: 10px; border-radius: 5px; background: var(--line); overflow: hidden; }
.bar-fill { height: 100%; background: var(--green); }

#detail { border-top: 1px solid var(--line); margin-top: 14px; padding-top: 6px; }
#detail h3, #detail h4 { margin: 14px 0 4px; font-size: 1.05rem; }
#detail ul { margin: 4px 0; padding-left: 22px; }
#detail p { margin: 8px 0; }
.note { color: var(--muted); font-size: 0.88rem; }

#timing { margin: 12px 0 0; color: var(--muted); font-size: 0.92rem; }

footer { color: var(--muted); font-size: 0.9rem; }
footer ul { margin: 0; padding-left: 20px; }